| width="20%"|Tenure | width="40%"|Incumbent | width="20%"|Notes |
| b>Hungarian Suzerainty |
| small>6 April 1867 to 29 July 1870 | Ede Cseh de Szentkatolna, Governor | |
| small>29 July 1870 to 5 December 1872 | Jzsef grf Zichy de Zich et Vsonke, Governor | |
| small>26 February 1873 to 1 November 1883 | Gza grf Szapry de Szapr, Governor | |
| small>1 November 1883 to 6 March 1892 | gost grf Zichy, Governor | |
| small>6 March 1892 to 2 October 1896 | Lajos grf Batthyny de Nemetujvr, Governor | |
| small>2 October 1896 to 14 July 1897 | Rezs br Abele de Lilienberg, Governor | |
| small>14 July 1897 to 23 November 1897 | Tibor Gaal de Hatvan, acting Governor | 1st Term |
| small>23 November 1897 to 2 August 1903 | Lszl grf Szapry de Szapr, Governor | |
| small>2 August 1903 to 10 December 1903 | Tibor Gaal de Hatvan, acting Governor | 2nd Term |
| small>10 December 1903 to 17 February 1905 | Ervin br Roszner, Governor | |
| small>17 February 1905 to 17 October 1905 | Tibor Gaal de Hatvan, acting Governor | 3rd Term |
| small>17 October 1905 to 26 December 1905 | Pl grf Szapry de Szapr, Governor | |
| small>26 December 1905 to 24 May 1906 | Tibor Gaal de Hatvan, acting Governor | 4th Term |
| small>4 April 1906 to 29 April 1906 | Gyrgy grf Krolyi de Nagykroly, Governor | |
| small>24 May 1906 to 7 December 1909 | Sndor grf Nk de Nagyszentmikls, Governor | |
| small>7 December 1909 to 13 November 1910 | Istvn grf Wickenburg de Capell, acting Governor | |
| small>13 November 1910 to 31 July 1917 | Istvn grf Wickenburg de Capell, Governor | |
| small>31 July 1917 to 28 October 1918 | Zoltn Jekelfalussy de Jekel- s Margitfalva, Governor | |
| olspan="3"|Under the Principal Allied and Associated Powers |
| small>28 October 1918 to 29 October 1918 | Zoltn Jekelfalussy de Jekel- s Margitfalva, Governor | |
| olspan="3"|Italian Suzerainty |
| small>28 October 1918 to 8 September 1920 | Antonio Grossich, President of the Italian National Council of Fiume | |
| small>14 September 1919 to 8 September 1920 | Gabriele D'Annunzio, Commander | |
| olspan="3"|Reggenza Italiana del Carnaro |
| small>8 September 1920 to 29 December 1920 | Gabriele D'Annunzio, First Chancellor | |
| small>29 December 1920 to 31 December 1920 | Riccardo Gigante, President of the Municipal Council of Fiume | |
| olspan="3"|Independent State of Fiume |
| small>31 December 1920 to 27 April 1921 | Antonio Grossich, Chairman of the Provisional Government of the State | |
| small>27 April 1921 to 28 April 1921 | Riccardo Gigante, President of the Provisional Directory of Fiume | |
| small>28 April 1921 to 13 June 1921 | Salvatore Bellasich, Commissioner Extraordinary | |
| small>13 June 1921 to 1921 | valign=top|Antonio Foschini, High commissioner | Appointed on behalf of Kingdom of Italy |
| small>1921 to 5 October 1921 | valign=top|Luigi Amantea, High commissioner | Appointed on behalf of Kingdom of Italy |
| small>5 October 1921 to 4 March 1922 | Riccardo Zanella, President | |
| small>4 March 1922 to 9 March 1922 | Committee of National Defense | |
| small>9 March 1922 to 16 March 1922 | Giovanni Giuriati, provisional President | |
| small>17 March 1922 to 17 September 1923 | Attilio Depoli, Provisional Head of State | |
| small>17 September 1923 to 16 March 1924 | Gaetano Giardino, Military Governor | Appointed on behalf of Kingdom of Italy |
| a href="/encyclopedia/16-March" title="16 March">16 March 1924 | colspan="2"|Incorporated into Kingdom of Italy |
| a href="/encyclopedia/10-February" title="10 February">10 February 1947 | colspan="2"|Incorporated into Yugoslavia |